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Title: Effect of cobalt substitution on structure and magnetic properties of Nd0.4Zr0.6Fe10–xCoxSi2 (x = 0–3) alloys and their ribbons

Journal Article · · Journal of Rare Earths
 [1];  [2];  [3];  [3];  [4];  [5];  [5];  [5]
  1. Institute of Nanoscience and Nanotechnology (NCSR) Athens (Greece); Univ. of Delaware, Newark, DE (United States)
  2. Aristotle University of Thessaloniki (Greece)
  3. Institute of Nanoscience and Nanotechnology (NCSR) Athens (Greece)
  4. Univ. of Delaware, Newark, DE (United States)
  5. Universidad del Valle (Colombia)

This paper reports the stabilization of the RFe12-type based compounds where part of R and Fe are substituted with Zr and Co and Si, respectively, in order to examine whether these rare-earth-lean materials are suitable for applications as permanent magnets. Structural and magnetic characterization of the family of alloys with the general formula Nd0.4Zr0.6Fe10–xCoxSi2 (x = 0–3) and their melt-spun ribbons were carried out using X-ray diffraction and Mössbauer spectroscopy. The ThMn12-type structure is obtained for all samples as the majority phase with a minority α-Fe(CoSi) phase (less than 5 wt%) as it was estimated by XRD for x = 1 and 2. The Curie temperature increases linearly with Co substitution from 561 K for x = 0 to 712 K for x = 3. The saturation magnetization decreases slightly from 130.5 (x = 1) to 129.1 A·m2/kg (x = 3), while the anisotropy field is following the same trend.

Research Organization:
Univ. of Delaware, Newark, DE (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FG02-90ER45413
OSTI ID:
1800712
Alternate ID(s):
OSTI ID: 1778571
Journal Information:
Journal of Rare Earths, Vol. 37, Issue 10; ISSN 1002-0721
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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